@althompsonphd The note reference in your original post is for Windows only. We generally do not see this behavior from Mac OS. Since Mac OS is driven by configuration files and not a Registry database like Windows, I would recommend deleting the related JMP configuration files. JMP will rebuild them on the next launch. However, you will need to supply the JMP license file or serial number again.
The steps below come from this JMP Note 678317
Remove JMP User Customization Data
1) From Finder, select Go > Go to Folder…
2) Type ~/Library and hit Enter
3) In the user’s Folder, open the Application Support folder
4) Select the JMP folder and drag it to Trash
(You might have to provide your password to complete the action)
5) Navigate back to ~/Library
6) Open the Preferences folder
7) Find all the “com.sas.jmp” files and drag them to Trash.
There will be at least com.sas.jmp.plist and maybe more than one.
If the step above do not resolve your issue, please contact support@jmp.com to open a Technical Support case to further investigate this issue.